Carbon nanotube growth from titanium-cobalt bimetallic particles as a catalyst

Shintaro Sato; Akio Kawabata; Daiyu Kondo; Mizuhisa Nihei; Yuji Awano

doi:10.1016/j.cplett.2004.12.018

Carbon nanotube growth from titanium-cobalt bimetallic particles as a catalyst

Shintaro Sato, Akio Kawabata, Daiyu Kondo, Mizuhisa Nihei, Yuji Awano

Research output: Contribution to journal › Article › peer-review

51 Citations (Scopus)

Abstract

Bimetallic particles of Ti and Co have been used to grow multi-walled carbon nanotubes (MWNTs) to study the effects of Ti on the growth. The particles were generated by laser ablation and size-classified with a differential mobility analyzer. Diameter-controlled MWNTs were grown on a silicon substrate from 5-nm particles by thermal chemical vapor deposition using acetylene at 510 and 610°C. Titanium has been found to enhance the MWNT growth significantly. There is an optimum Ti fraction for the growth, as confirmed by evaluation of the growth probabilities of MWNTs. A possible mechanism of growth enhancement by Ti is discussed.

Original language	English
Pages (from-to)	149-154
Number of pages	6
Journal	Chemical Physics Letters
Volume	402
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2004.12.018
Publication status	Published - 2005 Jan 24
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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abstract = "Bimetallic particles of Ti and Co have been used to grow multi-walled carbon nanotubes (MWNTs) to study the effects of Ti on the growth. The particles were generated by laser ablation and size-classified with a differential mobility analyzer. Diameter-controlled MWNTs were grown on a silicon substrate from 5-nm particles by thermal chemical vapor deposition using acetylene at 510 and 610°C. Titanium has been found to enhance the MWNT growth significantly. There is an optimum Ti fraction for the growth, as confirmed by evaluation of the growth probabilities of MWNTs. A possible mechanism of growth enhancement by Ti is discussed.",

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AU - Sato, Shintaro

AU - Kawabata, Akio

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AU - Nihei, Mizuhisa

AU - Awano, Yuji

PY - 2005/1/24

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AB - Bimetallic particles of Ti and Co have been used to grow multi-walled carbon nanotubes (MWNTs) to study the effects of Ti on the growth. The particles were generated by laser ablation and size-classified with a differential mobility analyzer. Diameter-controlled MWNTs were grown on a silicon substrate from 5-nm particles by thermal chemical vapor deposition using acetylene at 510 and 610°C. Titanium has been found to enhance the MWNT growth significantly. There is an optimum Ti fraction for the growth, as confirmed by evaluation of the growth probabilities of MWNTs. A possible mechanism of growth enhancement by Ti is discussed.

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